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I'm haveing trouble wiyth my cooling system the whose coming from the top of the block flattens out when the car is cooled of but when it runs it's hard as a rock!Not overheating though..any i

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  • 95 Answers

Had this problem with old chev truck. Replaced coolant overflow
tank and problen started. The hole in the tank were the hose from the radiator connected was clogged. Check for clogged hose or clogged vent in over flow tank.

Posted on Apr 23, 2013

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Posted on Jan 02, 2017

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messstat
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SOURCE: looking for procedure to properly bleed an audi A4

You didn't say what year the car is or what other diagnostics you've done lately...My guess is the radiator core is plugged...If you want to tackle it yourself, buy a Chiltons repair manual at AutoZone or NAPA stores ($25). I suspect you'll have to order the manual.
Good Luck

Posted on Jun 26, 2009

  • 3 Answers

SOURCE: my freelanders cooling fans keep coming on

have you checked the fan switch which should be on the radiator, maybe faulty and operating at the wrong tempreture.

Posted on Sep 05, 2009

  • 18 Answers

SOURCE: 1996 Chrysler LHS over heating. replaced cooling

you may find that the wiring plug on the harness to the fans has over heated ,it will come on once untill the plug gets hot loseing connection ,i have went to salvage yard and got good used plug and solder it in place an get another 30 to 60 th miles then do it again...and the thansducer switch some times will be bad ,its next to condenser on ac line ...try salvage part first ,,,,

Posted on Oct 25, 2009

  • 3600 Answers

SOURCE: 2006 pt cruiser, cooling fan motor stays on after

check the fluid in the radiator, and replace the thermostat the way it is positioned it could stop the flow from the radiator and keep the fan from turning off, I have found on several of them that I have worked on that the thermostat was bad. hope this helps. Only other things that would cause this or most common is the antifreeze is bad or the water pump is defective or you have a bad radiator hose but have not seen this on any I have worked on.

Posted on Mar 02, 2010

  • 96 Answers

SOURCE: 2001 PT cruiser overheating.

Note that you will not damage anything unless you don't turn it off when it gets too hot.

So start the car and let is idle to get warm - have the hood open and see if the fans come on. If the temp goes past normal and fans do not kick on, it's usually the fan relay (~$20) - these usually sit in the engine compartment fuse box. Also check the fan fuses - there should be two of them. If that doesn't work, then it would be the temp sensor.

However if your heater is blowing cold when the car is warm, sounds like there is an air-lock. This happens if you don't 'burp' the cooling system properly after flushing the system. Easiest way to check on this is if either the lower or upper radiator hose is not hot when the engine is hot.

Incidentally, if the thermostat is shot, you would not be able to 'burp' the system properly.

My bet is either the thermostat or airlock - or both.

Posted on Jul 31, 2010

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1 Answer

When I've stopped and removed the key both cooling fans run and it flattens the battery. They run at full speed for a bit and then reduce speed and speed up and down. It s a VW Touran FSI 2005 model


Try unplugging the cooling fan relays. if the fans stop running, replace the relays. The fan relays are located in the plastic box under the hood, near the battery on top of inner fender well. The box lid has fuse and relay description printed on it.

May 23, 2017 | Cars & Trucks

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Have a 2004 saturn L300, having problems with cooling system, had the thermostat changed, wich cost me a fortune, now the dealer's mechanic thinks i have to change the cooling module, since i'


not clear on a cooling module...there are relays which operate the cooling fans is this what you mean? there is atemp sensor that has wires connected to it mounted in the block that will tell the fans to come on to cool the car..if this sensor is bad the system will not function properly hence with the fans if they dont come on the car wont cool down either..need each one checked and replace whats broken..good luck..

Jan 19, 2013 | Cars & Trucks

1 Answer

Trying to burp cooling system, but when car heats up the coolant shoots out of the radiator like a fountain.. Thermostat is removed, still heats up


You are correct in your suspicions.
The thermostat blocks flow thru the radiator to help the engine warm up. The coolant still flows thru the block with the thermostat closed. If you remove the thermostat the cooling system should flow thru the radiator and stay below 160 degrees if the air temp is below 90.
If the thermostat is out and the engine is getting hot at idle speed, either the water pump has failed, or there is another blockage in the engine block.

Jan 09, 2013 | 1995 Chevrolet Camaro

4 Answers

My 2001 Ford Taurus keeps running too hot to safely drive. Whenever the car is started fluid immediately gushes out of the plastic resevior that you put the water/antifreeze leading to the radiator. I...


You have an air bubble at the top of the engine.
The antifreeze spewing out of the overflow happens due to your perfectly functional radiator cap
passing the overheated coolant/air mixture out of the system into the reservior (in an attempt
to relieve overpressurization of the cooling system)
The sudden nature of your overheating comes from the boiling of the inadequate amount of
coolant/antifreeze in your engine, since it cant properly cool the engine, so it boils (overheats quickly), and pressure rises immediately within the cooling system.
The Fix is free: locate and open the (air) bleeder port at the top of the engine, and add the usual
50% coolant/50% water mixture to the radiator until the radiator is full to the level indicated in
your owner's manual (or the "Full" line). Then close the bleeder port and replace the rad (radiator)
cap.
The air bleeder port is normally located near the thermostat, and should be opened each time
that coolant is added to the radiator. The air bleeder port need not be opened when adding
50/50 coolant to the reservior, since the rad cap is going to be closed while adding coolant
to this part of the cooling system.
Warning: driving beyond the point where your engine temperature gauge indicates overheating will
destroy the car's engine - it'll seize up due to overheating, and the only fix for a seized/burned-up
engine is replacement (of the engine). Seizing an engine is really easy with an air bubble in the
top of the engine - you could easily burn up/warp the head, necessitating replacement of the head
and head gask
et.

Sep 04, 2011 | 2001 Ford Taurus

1 Answer

Engine on my 2004 ford freestar is trying to over heat when accelerate and cools goes down when I slow down, also heats up going up hills.


Physically look in the radiator under the cap when cool, for coolant level, and check the valve in the cap for sticking. If air is present in the radiator it can't get out, and more coolant can't get in,(from the overflow). Either clean the cap or replace it and check that it is the CORRECT cap.
Radiator fins dirty, clean with a strong stream of water, not high pressure water.
Radiator clogged, try backflushing it, or replace.
Thermostat stuck open or shut, replace it.
Water pump worn out, can no longer move enough coolant, replace it.
Fan shroud broken or missing....
Electric Fan(s) not working, Check the fan, relay, fuse and engine temperature sensor's.
Belt driven fan, belt slipping, fan clutch is bad, fan blades have flattened out.

Air dam under front bumper is gone, loose, or broken. It actually has a purpose other than scraping on the driveway or curbs. It forces air up into and thru the condenser and radiator. If it's loose, airflow can actually push it out of place making it useless or blocking the airflow. Along with that, there may also be a plastic piece attached to the bottom of, and wraps up behind the bumper. If it's loose, airflow can actually push it out of place blocking the airflow. Simply reattach it with 4 or 5 screws.

Also, if the vehicle has A/C and electric fans, one fan is dedicated to the A/C and should come on almost the instant the A/C is turned on. The engine fan will run even with the key off, that is normal. The system is trying to cool itself. Hope this helps.

Aug 26, 2011 | 2004 Ford Freestar

2 Answers

How can I trouble shoot my temperture gauge on my 98 pontiac sunfire, it works at random


IT COULD BE A BAD TEMP SENSOR ON THE ENGINE BLOCK,REPLACE IT AND IF THAT DOESNT WORK ,IT COULD BE A BAD INSTRUMENT CLUSTER,GM HAD LOTS OF PROBLEMS WITH THE GAUGES GOING BAD.IF THAT IS THE CASE THEN THE CLUSTER WILL HAVE TO BE SENT OUT FOR REPAIR.

Aug 26, 2011 | 1999 Pontiac Sunfire

1 Answer

Cooling fan isnt working and van is overheating. There is plenty of coolant in the well but it seems like it has been in there for a while and hasnt been depleting much. thank you


Physically look in the radiator under the cap when cool, for coolant level, and check the valve in the cap for sticking. If air is present in the radiator it can't get out, and more coolant can't get in,(from the overflow). Either clean the cap or replace it and check that it is the CORRECT cap.
Radiator fins dirty, clean with a strong stream of water, not high pressure water.
Radiator clogged, have it boiled out, or replace.
Thermostat stuck open or shut, replace it.
Water pump worn out, can no longer move enough coolant, replace it.
Fan shroud broken or missing....
Electric Fan(s) not working, Check the fan, relay, fuse and engine temperature sensor's.
Belt driven fan, belt slipping, fan clutch is bad, fan blades have flattened out.

Air dam under front bumper is gone, loose, or broken. It actually has a purpose other than scraping on the driveway or curbs. It forces air up into and thru the condenser and radiator. If it's loose, airflow can actually push it out of place making it useless or blocking the airflow. Along with that, there may also be a plastic piece attached to the bottom of, and wraps up behind the bumper. If it's loose, airflow can actually push it out of place blocking the airflow. Simply reattach it with 4 or 5 screws.

Also, if the vehicle has A/C and electric fans, one fan is dedicated to the A/C and should come on almost the instant the A/C is turned on. The engine fan will run even with the key off, that is normal. The system is trying to cool itself. Hope this helps.

Aug 25, 2011 | 2002 Kia Sedona

1 Answer

'02 kia rio over heating & losing coolant. ps. we the car operates in the southern desert, today 108 degrees F. !!!!!!!!!!!!


Physically look in the radiator under the cap when cool, for coolant level, and check the valve in the cap for sticking. If air is present in the radiator it can't get out, and more coolant can't get in,(from the overflow). Either clean the cap or replace it and check that it is the CORRECT cap.
Radiator fins dirty, clean with a strong stream of water, not high pressure water.
Radiator clogged, have it boiled out, or replace.
Thermostat stuck open or shut, replace it.
Water pump worn out, can no longer move enough coolant, replace it.
Fan shroud broken or missing....
Electric Fan(s) not working, Check the fan, relay, fuse and engine temperature sensor's.
Belt driven fan, belt slipping, fan clutch is bad, fan blades have flattened out.

Air dam under front bumper is gone, loose, or broken. It actually has a purpose other than scraping on the driveway or curbs. It forces air up into and thru the condenser and radiator. If it's loose, airflow can actually push it out of place making it useless or blocking the airflow. Along with that, there may also be a plastic piece attached to the bottom of, and wraps up behind the bumper. If it's loose, airflow can actually push it out of place blocking the airflow. Simply reattach it with 4 or 5 screws.

Also, if the vehicle has A/C and electric fans, one fan is dedicated to the A/C and should come on almost the instant the A/C is turned on. The engine fan will run even with the key off, that is normal. The system is trying to cool itself. Hope this helps.

Aug 24, 2011 | Kia Rio Cars & Trucks

2 Answers

Radator fans will not come on 1996 neon


The older Dodge neon cooling system has always been a problem, so this will not be easy to diagnose and repair.

A little background. There is a temperature sensor in the coolant system that sends that information to the PCM and the PCM then sends a signal to your temperature gauge to register it. Once the temperature of the preset peak, the PCM then sends a signal to the cooling fans to turn on, so the do NOT run at all times when the engine is turning, only when the coolant level reaches a preset level (in the 200F to 235F range). The one exception to that is when the AC is turned on, the radiator fans should be told to turn on. So start the car, turn on your ac and see if the cooling fans turn on. If yes, you don't have a problem with the cooling fans. But that doesn't mean that you don't have a problem with your cooling system. If the car is overheating, you need to find out if the PCM is sending a signal to the cooling fans to turn on. If it isn't the trouble could be in the PCM.

Jun 06, 2011 | Plymouth Neon Cars & Trucks

1 Answer

Oil in coolant


Thoroughly flush out the coolant expansion tank and cooling system, radiator , engine block ect... with a commercially available cooling system flush (Prestone or any other brand). Oil will damage the rubber cooling system hoses. Refill the cooling system with the correct amount of fresh antifreeze and drive the car after the cooling fans have cycled on and off. When the cooling system has cooled down top up as required and keep an eye on the cooling system for a few weeks to see if the problem reoccurs or if someone had inadvertently put oil in the reservoir.If not I'm more leaning toward a blown head gasket. it will run fine but you will have to keep the water clean out. to fix it buy a head gasket and surface the head..you have a blown head gasket

Jan 24, 2011 | 2001 Chevrolet Impala

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